Custom Elements: Lookup custom element definition algorithm

third_party/WebKit/Source/core/dom/custom/CustomElementRegistry.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CustomElementRegistry_h
 #define CustomElementRegistry_h
 
 #include "base/gtest_prod_util.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
@@ skipping 21 matching lines @@
     : public GarbageCollectedFinalized<CustomElementRegistry>,
       public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
   WTF_MAKE_NONCOPYABLE(CustomElementRegistry);
 
  public:
   static CustomElementRegistry* create(const LocalDOMWindow*);
 
   virtual ~CustomElementRegistry() = default;
 
-  void define(ScriptState*,
-              const AtomicString& name,
-              const ScriptValue& constructor,
-              const ElementDefinitionOptions&,
-              ExceptionState&);
+  CustomElementDefinition* define(ScriptState*,
+                                  const AtomicString& name,
+                                  const ScriptValue& constructor,
+                                  const ElementDefinitionOptions&,
+                                  ExceptionState&);
 
-  void define(const AtomicString& name,
-              CustomElementDefinitionBuilder&,
-              const ElementDefinitionOptions&,
-              ExceptionState&);
+  CustomElementDefinition* define(const AtomicString& name,
+                                  CustomElementDefinitionBuilder&,
+                                  const ElementDefinitionOptions&,
+                                  ExceptionState&);
 
   ScriptValue get(const AtomicString& name);
   bool nameIsDefined(const AtomicString& name) const;
   CustomElementDefinition* definitionForName(const AtomicString& name) const;
 
   // TODO(dominicc): Switch most callers of definitionForName to
   // definitionFor when implementing type extensions.
   CustomElementDefinition* definitionFor(const CustomElementDescriptor&) const;
 
   // TODO(dominicc): Consider broadening this API when type extensions are
@@ skipping 36 matching lines @@
   Member<UpgradeCandidateMap> m_upgradeCandidates;
 
   using WhenDefinedPromiseMap =
       HeapHashMap<AtomicString, Member<ScriptPromiseResolver>>;
   WhenDefinedPromiseMap m_whenDefinedPromiseMap;
 };
 
 }  // namespace blink
 
 #endif  // CustomElementRegistry_h